Deaerating apparatus



March 24, 1942. v, ROI-[LIN 2,277,368

DEAERA TI NG APPARATUS Filed July 17, 1940 N V E NTO R We 70/? 4. ROI/10V ATTORNEY Patented Mar. 24, 1942 UNITED STATES PATENT OFFICE 2,277,368 DEAERATIN APPARATUS Victor A. Rohlln, Philadelphia,

Pa., tassignor to Cochrane Corporation, Philadelphia, Pa., a corporation of Pennsylvania Application July 17, 1940,

4 Claims.

The general object of the present invention is to provide improved apparatus for heating and to heat and deaerate the water.

tion between said chambers, variably throttled as required the water simultaneously discharged through the port.

The means which Serial No. 345,915

' at least frequently, is exhaust steam from a tur- The water to be nozzles F receiving water from an annular manifold F coaxial with the tank, the nozzles F being arranged to discharge water the tank axis.

Water is supplied to the manifold F through a vent condenser G from a supply pipe H at a rate regulated by a valve H and float H, as required to maintain an approximately constant water level in the chamber B.

includes a check valve P.

apparatus heating chamber G from the supply pipe by the valve'H' and approximately constant water level in the deaerating chamber C, from which water is withdrawn for boiler feed or other purposes through an outlet Q. Steam supplied to the chamber B through the supply pipe E heats the water sprayed into the chamber C to approximately the temperature of the steam, and steam passing through the port I into the chamber C, completes the deaeration oi the water full temperature of the steam in the chamber B.

Under normal conditions, the steam pressure in the chamber C will be less than the steam pressure in the chamber B by an amount which, in practice, will ordinarily vary from a pound B through the vent condenser H at a rate so regulated and heats it to the.

the pressure in the or so down to a quarter of a pound. Bald amount depends upon the1compression of the loading spring K, and is predetermined to insure a velocity of steam discharge through the port I high enough to atomize the water simultaneously discharged through the port I, and thereby separate from the decreased.

The described procedure ing and deaeration oi the water. of a temporary fluctuation or operating. conditions, the pressure chamber B tends to sure in the deaerating chamber B, the normally closed check valve 0 opens and permits the pressures in the two chambers to equalize through the passage M. This substantially eliminates any tendency to an objectionable accumulation of water in the chamber B.

While in accordance with the provisions of the statutes, I have illustrated and described the best form of embodiment of my invention now known to me, it will be apparent to those skilled in the art that changes may the form of insures eiilcient heat- It, as a result disturbance in in the heating be made in the apparatus disclosed without departing from the spirit of my invention as set forth in the appended claims and that in some cases certain features of my invention may be used to advantage without a corresponding use 0! other features.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

l. Deaerating apparatus comprising a water deaerating chamber, a water heating chamber with a bottom outlet port for the discharge of water by gravitational downflow and for the simultaneous discharge of steam into the deaerating chamber, means for spraying the water to be heated and deaerated into the heatimi chamber, means ior passing steam to heat and fall below the steam presdeaerate the water into the first chamber, a valve biased for movement into position to close said port and actuated by the differential oi the steam pressures in the two chambers to throttle the how or steam through said port as required to maintain the heating chamber pressure in predetermined excess above the deaerating chamber pressure, a second port connecting said chambers, and a normally KilO'sed check valve controlling said second port and adapted to open upon an increase in the deaerating chamber pressure above the heating chamber pressure.

2. Deaerating apparatus comprising a water deaerating chamber, a water heating chamber with a bottom outlet port for the discharge or water by gravitational downflow into the deaerating chamber, means for spraying the water to be heated and deaerated into the heating chamber, means ror passing steam to heat and chamber, a

ment into position to close said port and actuated by the diflerential ot the steam pressures in the two chambers to maintain the heating chamber pressure in such excess above the pressure in the deaerating chamber that steam will normally pass into the deaerating chamber through said port with a velocity high enough to atomize the water simultaneously passing through said port, a second pressure port connecting said chambers, and a normally closed check valve controlling said seoond port and adapted to open upon an increase in the pressure in the deaerating chamber above the pressure in the heating chamber.

3. Deaerating apparatus comprising a water deaerating chamber, a water heating chamber having a bottom wall formed with a horizontal outlet port for the discharge of water by gravitational downflow and for the simultaneous discharge or steam opening into the upper portion of the deaerating chamber, means for spraying water to be heated and deaerated into the heating chamber, means for passing steam to heat and deaerate the water into the first chamber, a vent condenser receiving air and steam from the deaeratingchamber, and a horizontally disposed valve biased for movement into position to close said port and actuated by the diflerential of the steam pressures in the two chambers to open for the downfiow through said port of water and sufficient steam to maintain the heating chamber pressure in predetermined excess above the pressure in the deaerating chamber.

4. Deaerating apparatus comprising a water deaerating chamber, a water heating chamber having a bottom wall comprising a lower portion of trusto conical form with its lower, smaller diameter end surrounding a steam and water outlet port opening into the upper portion 0! the deaerating chamber, means for spraying water to be heated and deaerated into the heating chamber, means for passing steam to heat and deaerate the water into the first chamber, and a horizontally disposed valve disc below said port and biased for movement into position to close said port and actuated by the differential of the steam pressures in the two chambers to open for the downilow through said port of water and suflicient steam. to maintain the heating chamber pressure in predetermined excess above the pressure in the deaerating chamber.

VICTOR A. RJOHLIN. 

